Shuttle for sewing-machines.



HENRY A. BATES, 0F MIDIBLETIVN, CONNECTCUT.

es'naaa.

Specification of Letters Patent.

Patented ltaro, 1910.

l Application ilerl January 2, 1.909. Serial No. fi''l'li.

.To ZL ywhom 'it may concern:

Be it known that. l, Hen-ni' A. Barns, a

citizen of the United States, residing at Middletown, in the county of Middlesex and4 State of Connecticut? have invented an finiprovement in Shuttles for Sewing-Machines, of which the following is a speciticati'on. My invention of an improvement in shuttles for sewing machines relates particularly to the bohbin case and the means 'forming part thereof for engaging the thread hobhin and retaining the same during use within -the hohbin case an( applying friction fior tension 4Whether or not the said devices are accompanied bythe presence ot the bohhin case holder or hook-device. A

ln the device of my invention, the stem of 'the bohbin case is provided at its free end with a. circumferential Bange or shoulder and a. sleeve surrounds said stem freely but .not loosely, This sleeve is at its inner end preferably provided with e eircnni erential shoulder or narrow tia/nge and a spring ot suitable form and character occupies a position Within the hobhin case and -hears respectively against the hobhin case and the inner end face of the sleeve to force the sleeve foi" 'ard against the retaining' shoulder on the reeend ot the stein and ei'i'ect a retarding` friction against a too rapid rotation of the sleeve and thread hohbin. The stein is preferably longitudinally slit for the passage to its place of the sleeve.

The external diameter oi? the sleeve agrees substantially with the internal. diameter et the core ot' the thread hobhin which for use forced over the sleeve and held. trictionally in position; the flange of the sleeve preventinfnr 'forcing the thread bohhin too far. TWhen the thread ot the hohhin is used up the core is quickly removed and anew thread hohbin put in position.

ln the drawing', Figure .l is a plan represcnting the features of my invention and Figa is a vertical crossI section. Both of these views are ot exaggerated size ior clem-ness.

a represents the hohbin case the particular characte et which hears no special cr neces# sary relation to tti features oi' iny improve nient. This bohbin case is advantageously provided with a cross har il from Ythe center of which rises a stein which stein is pro vided with Hangc o1 at its free end Vand the saine is preferably slit [92 across the center'o the stein in at least one and probably in opposite directions.

c represents a sleeve adapted to i'reely hut not loosely surround the stein o and in order to pass said sleeve over said stein it is necessary for the iaiiged end of the stein to yield and when the sleeve is in position the stein returns to its 'normal condition in which the diameter ot the flange exceeds the tree open dianicter et the sleeve7 consequently ity requires pressure to remove the sleeve from the stein hy again compressing thexnd of the stein, The sleeve is preferably provided with a shoulder or slightv flange c1 at 'the lower end :ind in the basel or the hohhin case and between the lovver end of the sleeve and the cross-har al, l place :i spring of any suitable or desired character. ln fact this spring may he any f one of the springs shown and described in Letters Patentpreviously granted to ine.- lior convenience have shown the spring as composed o" a circular endless riin Q, arms 3 and integral ring` center i; the' rim ot the spring hearing upon the cross-bar al and portion-of the looohin czse if desired, und the ring center or end surface of tie sleeve C, i

c represents the thread oolobin core and el the hobhin thread portion of the thread hobhin. rihe core e lits snugly around the sleeve c' and with suiticient friction to he held to the sleeve so as to cause the sleeve to rotate with the hobbin during the univindingof the thread ange or shoulder o1 of the sleeve acts to prevent forcing the thread bohhin too far when the saine is pressed to place and the action oit' the spring is to press the sleeve z'oravard and against the Flange b1 oi' the stein so as to etlect a retardiiigtriction againsty a too rapid rotation ojf the sleeve and thread hohhin in nnwinding the thread. 'This device is exceedingly simple and very etiicient, and the thread hohhin held in this way in the hohhin case is not in any sense nccessarilv connected `-*ith the hohhiii case helderv die .i read hohhin will keep its position any position the hobhin case without the risk et accidentel. seperation. I

l have shown in the drawing and herein described, the end of the stern as slit in opposite directions, and l have also shown the stein Z) as tubular a' sleeve 7os secured te the cross-imi' a1 and surrounding thesteni e hearing against the under i vQohrsg hetweeir the siem F) 21nd Sleeve lo not llimit my nvel'lon to this m '1wtmn,----n:-s some ot'mrjand erwivzdenf e* 'notion muy he empoyd 'for efectng "ion, or re'nongg 'Ene seeve upon the providing for/n ro'erdng frction.

1. 7m n ehnie for 5x ,fr machines, the """njabimon wh a. hohbn case, of u yield the Mor, en undivided sleeve f1tro stem nugy, and ihn sleeve adapted naive the 'Unread hohhn, a Hanne at the fr i, und of he siem formed integral hereexh "or lmdngr ii.' .Sleeve in position, :md

v', n. fair-fing; banning ziganet 'he inner 'face of sfnurr 'For sewing Innonnes, the nonnneon wlh n. hohou (mee, or' u split and vehfing heffing; en integral dr du: free und of 'the Seme, en @new ,.d :n.inp'rd ro ft the stem :muggy and receive ifm rhrem bobbin, Said "wing u 'Hang coming- 5 er the inner on, a spring hearing of? the sleeve and the n relinrnng the Sleeve n 1n place in the bobhn sewing nmchnee, the bohhn having n "Y" .secured rhereg e mg Stem iherein poel di.v ectonst a die Sem und at the divder'i. independent om: te he wreed. into the open he sommare/n hrend bobhln m' merino yielding stem AWdh 'ne upper end of ne f v1 remmen oonemh the over- 4. In a Shule for sewing machines, the combination with a bobbn case', of a longitudinally split stem, a Bange circumferentely forn'led at the free end of the stem," e sleeve ttng' the stem and 'adapted to be forced to position over sajd flange by the yielding of the end of the stem and the sleeve adapted to receive a thread bobbin and spring for preeshg the sleeve agair'let the 'Hnge of the stem for causing friction and hue Creating e tension.

fn :1 shn'lle for sew'uxg machines, the combination Wih u bobbn case, 0f a longndinaly split Stem, e. flange circumferentielly formed at the 'free end of the Stem, a.

sleeve fitting Athe stern and adapted to be forced to position over said flange by the yiedng of the end of the Stem and the Sleeve having 'a Shoulder or Hnge and adapted to .receive-a thread bohbin to which such innge forms a Stop, 'and a springT been pendent seeve .und forced dovn into 1; Ae

bobbn Case Slgncd by me dus Slet day'of December HENRY A'. BATES'. vWitnesses z y GEO. T'. PINCKNEY, ZAGHMzL-xsnm 

